/*
 * Copyright (c) 2007 innoSysTec (R) GmbH, Germany. All rights reserved.
 * Original author: Edmund Wagner
 * Creation date: 27.11.2007
 *
 * Source: $HeadURL$
 * Last changed: $LastChangedDate$
 * 
 * 
 * the unrar licence applies to all junrar source and binary distributions 
 * you are not allowed to use this source to re-create the RAR compression algorithm
 *
 * Here some html entities which can be used for escaping javadoc tags:
 * "&":  "&#038;" or "&amp;"
 * "<":  "&#060;" or "&lt;"
 * ">":  "&#062;" or "&gt;"
 * "@":  "&#064;" 
 */
package com.github.junrar.rarfile;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.github.junrar.io.Raw;

/**
 * extended archive CRC header
 * 
 */
public class EAHeader extends SubBlockHeader
 {
  private Log logger = LogFactory.getLog(getClass());

  public static final short EAHeaderSize = 10;

  private int unpSize;
  private byte unpVer;
  private byte method;
  private int EACRC;

  public EAHeader(SubBlockHeader sb, byte[] eahead)
   {
    super(sb);
    int pos = 0;
    unpSize = Raw.readIntLittleEndian(eahead, pos);
    pos += 4;
    unpVer |= eahead[pos] & 0xff;
    pos++;
    method |= eahead[pos] & 0xff;
    pos++;
    EACRC = Raw.readIntLittleEndian(eahead, pos);
   }

  /**
   * @return the eACRC
   */
  public int getEACRC()
   {
    return EACRC;
   }

  /**
   * @return the method
   */
  public byte getMethod()
   {
    return method;
   }

  /**
   * @return the unpSize
   */
  public int getUnpSize()
   {
    return unpSize;
   }

  /**
   * @return the unpVer
   */
  public byte getUnpVer()
   {
    return unpVer;
   }

  public void print()
   {
    super.print();
    logger.info("unpSize: " + unpSize);
    logger.info("unpVersion: " + unpVer);
    logger.info("method: " + method);
    logger.info("EACRC:" + EACRC);
   }
 }
